This document is a summary by Anna Kilp in the 11th form about common idioms that use the word "fish". It outlines three idioms - "there is something fishy about this" which means something seems suspicious, "a big fish in a small pond" which refers to an important person in a small community, and "a fish out of water" which describes someone who is uncomfortable in an unfamiliar situation. It concludes by thanking the reader for their attention.